Seasonal variations of virus abundance and viral control of the bacterial production in a backwater system of the danube river.

Applied and Environmental Microbiology
C B MathiasB Velimirov

Abstract

The abundance of virus-like particles in a backwater system of the Danube River covered a range of 1.2 x 10(sup7) to 6.1 x 10(sup7) ml(sup-1) from 1992 to 1993. Measurements of head diameters for these particles, all of which were presumed to be viruses, led to four defined size classes, ranging from <60 nm to >150 nm. The 60- to <90-nm size class contained the largest fraction of total particles (41%), followed by the 90- to <150-nm size class (33%). The frequency of size classes was not significantly different between the two years. The frequency of bacteria with mature phages ranged from 1 to 4% over the seasons, with mean burst sizes ranging from 17 to 36 phage per host cell. Among the bacterial morphotypes, rods and vibrios were the major host systems for phages, while coccoid and filamentous cells were considered negligible. Counts from transmission electron microscopy and acridine orange direct counts confirmed that rods and vibrios accounted for 85 to 95% of the bacterial population over the seasons. Virus decay experiments showed lower decay rates for temperatures between 5 and 15(deg)C (52 to 70% of the virus population remained) relative to 18 and 25(deg)C (31 to 51% of the virus remained). Bacterial production measu...Continue Reading

References

May 1, 1977·Applied and Environmental Microbiology·J E HobbieS Jasper
Sep 1, 1992·Applied and Environmental Microbiology·K E WommackR R Colwell
Feb 1, 1990·Applied and Environmental Microbiology·K Y BørsheimM Heldal
Aug 10, 1989·Nature·O BerghM Heldal
May 1, 1970·Journal of Virology·J Mathews, D A Buthala
May 1, 1990·Applied and Environmental Microbiology·G BratbakT F Thingstad
Dec 1, 1993·Applied and Environmental Microbiology·M G WeinbauerP Peduzzi
Jan 1, 1995·Applied and Environmental Microbiology·K P Hennes, M Simon
Mar 1, 1990·Microbial Ecology·O A OgunseitanR V Miller

❮ Previous
Next ❯

Citations

Jun 10, 2004·Environmental Microbiology·Peter Peduzzi, Fritz Schiemer
Aug 26, 2009·Environmental Microbiology·Danielle M Winget, K Eric Wommack
Mar 8, 2000·Microbiology and Molecular Biology Reviews : MMBR·K E Wommack, R R Colwell
Feb 7, 2007·Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections·V V Drucker, N V Dutova
Jan 18, 2007·Environmental Microbiology·Christin SäwströmAlexandre M Anesio
Sep 14, 2010·Applied and Environmental Microbiology·Nathan BarrosFábio Roland
Jun 25, 2015·Biological Reviews of the Cambridge Philosophical Society·Peter Peduzzi
May 7, 2004·Applied and Environmental Microbiology·Yvan BettarelJohn Dolan
Apr 28, 2004·FEMS Microbiology Reviews·Markus G Weinbauer
Mar 20, 2009·Canadian Journal of Microbiology·Télesphore Sime-Ngando, Jonathan Colombet
Mar 13, 2014·FEMS Microbiology Reviews·Britt Koskella, Michael A Brockhurst
May 1, 1999·Applied and Environmental Microbiology·N Guixa-BoixereuC Pedros-Alio
May 12, 2004·The Journal of Eukaryotic Microbiology·Corina P D Brussaard
May 15, 2007·Applied and Environmental Microbiology·Verónica ParadaGerhard J Herndl
Sep 7, 2007·Environmental Microbiology·Kurt E WilliamsonK Eric Wommack
Sep 8, 2009·FEMS Microbiology Ecology·Christin SäwströmJan Karlsson
Nov 6, 2004·Applied and Environmental Microbiology·Ulrike R FischerBranko Velimirov
Jan 15, 2013·Microbial Ecology·Hans W Paerl, Timothy G Otten
Jul 27, 2017·Frontiers in Microbiology·Donald PanKarrie A Weber
Jul 20, 2017·Microbial Ecology·Pedro C JungerVinicius F Farjalla
Sep 18, 1997·Applied and Environmental Microbiology·J PinhassiA Hagström
Jun 1, 1996·Applied and Environmental Microbiology·M MiddelboeN Kroer
Jun 7, 2005·Trends in Microbiology·Mya Breitbart, Forest Rohwer

❮ Previous
Next ❯

Related Feeds

Bacteriophage: Phage Therapy

Phage therapy uses bacterial viruses (bacteriophages) to treat bacterial infections and is widely being recognized as an alternative to antibiotics. Here is the latest research.